clamBrE/klæm/NAmE/klæm/verbpresent simple - I / you / we / theyclamBrE/klæm/NAmE/klæm/present simple - he / she / itclamsBrE/klæmz/NAmE/klæmz/past simpleclammedBrE/klæmd/NAmE/klæmd/past participleclammedBrE/klæmd/NAmE/klæmd/ -ing formclammingBrE/ˈklæmɪŋ/NAmE/ˈklæmɪŋ/●ˌclamˈup (onsb)(informal) torefusetospeak, especiallywhensbasksyouaboutsth(尤指被询问时)拒绝说话,拒不开口,闭口不言